Device for adjusting slides in calculating-machines.



B.BEHR. DEVIGE FOR ADJUSTING SLIDES IN CALCULATING MACHINES.

I APPLICATION FILED APR. 17, 1911.

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Patented Jan. 9, 1912.

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BEBNHARD BEER, OF DRESDEN, GERMANY.

DEVICE FOR ADJUSTING SLIDES IN CALCULATING-MACHINES.

' Specification of Letters Patent. Application filed April 17, 1911. Serial No. 621,584.

To all whom it may concern:

Be it known that I, Bnnnnann Benn, citizen of the German Empire, Hamburgerstrame 19, Dresden, Germany, have invented certain new and useful Improvements in Devices for Adjusting Slides in Calculating-Machines, of which the fol- This invention relates lating machine provided with adjustin sliders, which are under the action 0 are adjustable in slots in the dial late, to which is secured a rigid tooth whic enga s with the rotatable rack provided later ly of the guiding slot. The upper end of this rotatable rafik is provided with a -.pin which projects outwardly Car , simultaneously through a s chine which come into through a slot inthe dial plate and passes ot in a common operating rod so that each rabk can be amt/sly or all the raoks together can moved out of engagement with the tooth of the slider so as to move the sliders separately or together into the zero position.

An object of the invention is to'provide slides in a calculatin machine which may be readily placed in tlie proper position an which may be locked in said position, and to provide means for releasing each slide from its locking element independently of the other slide and also to provide means for releasing all of said slides. simultaneously from theirf locking elements.

In the accom anying dra'wingis shown a constructional orm of the invention with the parts ofthe Thomas calculating ma- I question.

Figure 1 is a plan and Fig. 2 is an underside plan. I

In the slots 6 of the dial plate m are guided the adjusting sliders a. Laterally of the slots are rotatably mounted about the pivots d plates c,.which on the side toward the slot are provided with teeth and each of which has t e upper end provided with a pin e passing throu h a slot f in the common operating rod 0- an a slot 2' in the dial plate.

Each slider is provided with a rigid tooth b resting against a pin which in the normal osition of the [racks c engages with the toot corresponding to the adjustment. The position of each rack 0 is insured by a leaf spring secured to the back thereof by a screw g, the end of the spring it provided in the dial plate, The pins 6 of the racks o passing through the slots f and 'i are provided with residing at.

to a Thomas calcuhandle p and thus and in what manner the same each slider separate ing the sliders correspondingly into the zero position. For the purpose of moving all the sliders into the zero'position there is Patented Jan. 9,1912;

a head In for the purpose of laterally moving I y and separately movz provided the rod 0 having the head 1) and.

the slots f. a

Each adjusting slider a is connected bya pitch chain a to a sprin casing Z. In conseguence of this eachs ider tends to, move ow-nward automatically that is into the zero position which occurs which engages the detent b all The 5 ring casing is on its face ,rovi ed with gures (H) or with a figure isk carrying these figures. The figures are visible' in the dial plate m of the machine through apertures n. Before commencing the calculationthe adjusting sliders a are adjusted at zero. If a certain number is required the adjusting sliders a'are adjusted at the number just above by hand where upon the slider is released and is at the next lower re which is the onereuired. On the a ustment of the sliders 't e spring 0 rated racks c areautomatically moved ateraliy until the sliders have reached the requir justment of the slider the chain c is unroll from the spring casing Z in the known manner and the correspondi number appears behind the aperture n. -T e apertures n are disposed in a row and in view. If the number adfjiusted by a slider a is to be corrected it an slider slightly upward or to laterally move the head In and placing a finger'on the require'gl number and al owing the slider to move back, then releasing the head k, whereupon the rack locks the tooth of the slider. For the purpose of simultaneously adjusti all the si re 0 ismoved laterally by means of the also the slots f, whereby uently the racks a are the pins e and co 1 of the slidersare removed and the teeth leased. v

vHaving now particularly described and ascertained the nature of my said invention is to be performed, I declare that what I claim is 1. In adevice tor adjusting slides in a calculating machine the combination of a slide,

a dial plate, the slide beingmovable in a slot of said plate, an element pivotally supported adjacent adjusted are thus easily kept when the rack '0 is moved later i position. On the add as ms to move the ders to the zero position the the slot, means for intercrl locking said slide with said element. at a plurality of positions, and means for swinging said element about its pivot to release said slides.

2. In a device of the class described, the combination of a dial plate, a plurality of slides movable independently of each other in slots of said plate, an element pivotally supported adjacent eachslot and interlockahle with said slide at a plurality of positions and means for swinging each of said elements independently of the others about its pivot to release the slide interlocked therewith. v

3. In a device of the class described the combination of a dial plate, a plurality of slides movable independently of each otherin rectilinear slots in the plate, an element pirotally supported adjacent each slot and interlockahle with said slides at a plurality of positions, and a common means for supported adjacent each slot a; uerlocle able. w1tl1,sa1d slides at a plur: of pose 'tions, and a common means for sw l ing all of said elements sinalltaneoasly about their pivots to release simultaneously all of the slides interlocked therewith.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

R ER N UAR D '13 HR".

\Vitnesses:

Parr Alums, (in-inn SIMON. 

